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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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After driving to a riverfront parking lot, Bob plans to run south along the river, turn around, and return to the parking lot, running north along the same path. After running 3.25 miles south, he decides to run for only 50 minutes more. If Bob runs at a constant rate of 8 minutes per mile, how many miles farther south can he run and still be able to return to the parking lot in 50 minutes?
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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Each year for 4 years, a farmer increased the number of trees in a certain orchard by $$\frac{1}{4}$$ of the number of trees in the orchard the preceding year. If all of the trees thrived and there were 6,250 trees in the orchard at the end of the 4-year period, how many trees were in the orchard at the beginning of the 4-year period?
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OG15
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In a certain district, the ratio of the number of registered Republicans to the number of registered Democrats was $$\frac{3}{5}$$.After 600 additional Republicans and 500 additional Democrats registered, the ratio was $$\frac{4}{5}$$.After these registrations, there were how many more voters in the district registered as Democrats than as Republicans?
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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At his regular hourly rate, Don had estimated the labor cost of a repair job as $336 and he was paid that amount. However, the job took 4 hours longer than he had estimated and, consequently, he earned $2 per hour less than his regular hourly rate. What was the time Don had estimated for the job, in hours?
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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Of the 300 subjects who participated in an experiment using virtual-reality therapy to reduce their fear of heights, 40 percent experienced sweaty palms, 30 percent experienced vomiting, and 75 percent experienced dizziness. If all of the subjects experienced at least one of these effects and 35 percent of the subjects experienced exactly two of these effects, how many of the subjects experienced only one of these effects?
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OG15 OG16 OG17 OG18
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According to the passage, theory B states that which of the following is a factor that enables a schooling fish to escape predators?
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OG15 OG16 OG17 OG18
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According to one explanation of the "confusion effect", a fish that swims in a school will have greater advantages for survival if it
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OG15 OG16 OG17 OG18
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The author is primarily concerned with
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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It can be inferred from the passage that the "scholars" mentioned in the highlight text believe which of the following to be true?
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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In the context of the passage as a whole, the second paragraph serves primarily to
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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The primary purpose of the passage is to
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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Which of the following hypothetical experiments most clearly exemplifies the method of identifying species' roles that the author considers problematic?
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OG15 OG16 OG17 GWD OG18 OG19 OG20 OG2022
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The passage suggests which of the following about the identification of a species as a keystone species?
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OG15 OG16 OG17 OG18
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Manufacturers rate batteries in watt-hours; if they rate the watt-hour higher, the longer the battery can be expected to last.
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OG15 OG16 OG17 OG18
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Tropical bats play important roles in the rain forest ecosystem, aiding in the dispersal of cashew, date, and fig seeds; pollinating banana, breadfruit, and mango trees; and indirectly help produce tequila by pollinating agave plants.
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OG15 OG16 OG17 OG18
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By 1940, the pilot Jacqueline Cochran held seventeen official national and international speed records, and she earned them at a time when aviation was still so new for many of the planes she flew to be of dangerously experimental design.
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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Elizabeth Barber, the author of both Prehistoric Textiles, a comprehensive work on cloth in the early cultures of the Mediterranean, and also of Women's Work, a more general account of early cloth manufacture, is an expert authority on textiles in ancient societies.
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OG15 OG16 OG17 OG18 OG19
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Outlining his strategy for nursing the troubled conglomerate back to health, the chief executive's plans were announced on Wednesday for cutting the company's huge debt by selling nearly $12 billion in assets over the next 18 months.
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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According to scientists who monitored its path, an expanding cloud of energized particles ejected from the Sun recently triggered a large storm in the magnetic field that surrounds Earth, which brightened the Northern Lights and also possibly knocking out a communications satellite.
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OG15 OG16 OG17 OG18 OG19 OG20 OG2022
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While it costs about the same to run nuclear plants as other types of power plants, it is the fixed costs that stem from building nuclear plants that makes it more expensive for them to generate electricity.
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